Doppler velocity data are used to study solar cycle variation of the frequencies of solar acoustic oscillations from 1977 to 1988. The results show a clear...
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PublicationSolar cycle induced variations of the low L solar acoustic spectrum
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PublicationSolar FLAG hare and hounds: on the extraction of rotational p-mode splittings from seismic, Sun-as-a-star data
We report on results from the first solar Fitting at Low-Angular degree Group (solar FLAG) hare-and-hounds exercise. The group is concerned with the development...
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PublicationsolarFLAG hare and hounds: estimation of p-mode frequencies from Sun-as-star helioseismology data
We report on the results of the latest solarFLAG hare-and-hounds exercise, which was concerned with testing methods for extraction of frequencies of low-degree...
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PublicationStudy of p-mode excitation and damping rate variations from IRIS++ observations
11 years of low degree helioseismic data collected by the IRIS++ network (International Research of the Interior of the Sun) have been analyzed. The epoch...
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PublicationSunspot seismic halos generated by fast MHD wave refraction
Aims: We suggest an explanation for the high-frequency power excess surrounding active regions known as seismic halos. Methods: We use numerical simulations of...
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PublicationSurface Waves in Solar Granulation Observed with SUNRISE
Solar oscillations are expected to be excited by turbulent flows in the intergranular lanes near the solar surface. Time series recorded by the IMaX instrument...
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PublicationSYMPA, a dedicated instrument for Jovian seismology. I. Principle and performance
Aims:The detection and measurement of acoustic modes on the giant planets of the solar system is of great interest for the study of the internal structure and...
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PublicationSYMPA, a dedicated instrument for Jovian seismology. II. Real performance and first results
Aims: SYMPA is the first instrument dedicated to the observation of free oscillations of Jupiter. Its principles and theoretical performance have been presented...
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InstallationTacometro de Fourier
Modified Michelson interferometer (Fourier Tachometer) providing high resolution solar images of intensity, radial velocity and magnetograms at Niquel NI 676.8...